They still haven't fixed the missing map.
Was looking as Exul's stat block - he is pretty much the only fight in the module. He is basically an efreet, but with some odd changes. He loses good wisdom saves - why? He gains the ability to conjure an earth elemental. This is presumably MTG red card flavouring, but it then goes on to say he will summon the efreet standard fire elemental anyway (which he won't, because of the casting time). His scimitars are replaced with axes - this is just flavour, and makes sense in the context.
It's pretty pointless stating Malivar, since he starts on the ground with 1 hp, he has no chance if it comes to a fight. Rules savvy PCs could just murderize him for 2,300 xp though!
You could make Exul a fire elemental myrmidon and run the adventure at about level 4.